Battery charger



FIG. 1 is a perspective view of the battery charger showing my new design, with typical attachable cell-holding modules being shown in broken lines for illustrative purposes only;

FIG. 2 is an elevation view of the right side of the design;

FIG. 3 is a front elevation view of the design, with the sides of the battery charger oriented at the top and bottom of this view;

FIG. 4 is both a top plan view thereof, the bottom plan view being a mirror image;

FIG. 5 is an elevation view of the rear of the design, with the left side of the battery charger being at the bottom of this figure;

FIG. 6 is an elevation view of the left side of my new design. 

The ornamental design for a battery charger, as shown and described. 